What if...?
What if...? What if GM started making DOHC engines for the Vettes and others? Would they make more HP with the same displacement? I'm asking because I noticed that the Caddys have it, I think, with only a 4.3L they make 330HP/330TQ. I know the DOHC options are more expensive but someone show me the light 
If they made it, they would make more power. Nearly all of the best engines on the world market use 4-5 valves per cylinder and make upwards of 1 hp per cc of displacement. That means a 6.0L GM motor could make 600 hp theoretically if it made engines like Ferrari, BMW, and Honda.
Of course, you could kiss your $50K C6s and $35K GTOs good bye as a DOHC engine would add an astronomical amount to the purchase price of these cars. Pushrod motors are cheap to build and have excellent reliability. It's a trade off , but when it's all said and done, we get more for our money.
Of course, you could kiss your $50K C6s and $35K GTOs good bye as a DOHC engine would add an astronomical amount to the purchase price of these cars. Pushrod motors are cheap to build and have excellent reliability. It's a trade off , but when it's all said and done, we get more for our money.
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2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
started . ever heard of the LT5.
click on the graph on the right...
http://www.idavette.net/hib/ls6/page2.htm
. ever heard of the LT5.click on the graph on the right...
http://www.idavette.net/hib/ls6/page2.htm
it also requires a bigger head, and well, that may become tough to fit in a corvette.
look at the size of the mustang engine, its physically MUCH bigger than our ls1's despite being 1.1L less of displacement
look at the size of the mustang engine, its physically MUCH bigger than our ls1's despite being 1.1L less of displacement
TECH Junkie
Joined: Nov 2001
Posts: 3,604
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From: Los Angeles
Originally Posted by Patrick G
If they made it, they would make more power. Nearly all of the best engines on the world market use 4-5 valves per cylinder and make upwards of 1 hp per cc of displacement. That means a 6.0L GM motor could make 600 hp theoretically if it made engines like Ferrari, BMW, and Honda.
Of course, you could kiss your $50K C6s and $35K GTOs good bye as a DOHC engine would add an astronomical amount to the purchase price of these cars. Pushrod motors are cheap to build and have excellent reliability. It's a trade off , but when it's all said and done, we get more for our money.
Of course, you could kiss your $50K C6s and $35K GTOs good bye as a DOHC engine would add an astronomical amount to the purchase price of these cars. Pushrod motors are cheap to build and have excellent reliability. It's a trade off , but when it's all said and done, we get more for our money.
